Apply `buildArgs` also for deploy tests (via `package.json`) (#88731)
This change ensures that the `buildArgs` specified in `nextTestSetup` are also applied when running deploy tests. This is achieved by modifying the build command in the `package.json` file used for deploy tests to include the specified `buildArgs`.
See also https://vercel.com/docs/builds/configure-a-build#build-command.
The only current e2e test that uses the `buildArgs` option is `test/e2e/react-compiler/react-compiler.test.ts`, but that one is excluded from deploy tests via `deploy-tests-manifest.json`.